1. Adlumia. Petals united into a spongy persistent subcordate corolla. Seeds crestless.
2. Dicentra. Corolla cordate or 2-spurred at base, less united. Seeds crested.
[*][*] Corolla with but one petal spurred at base, deciduous.
3. Corydalis. Pod with few to many crested or arilled seeds.
4. Fumaria. Fruit a globular 1-seeded nutlet. Seed crestless.
1. ADLÙMIA, Raf. Climbing Fumitory.
Petals all permanently united in a cordate-ovate corolla, becoming spongy-cellular and persistent, enclosing the small, few-seeded pod. Seeds not crested. Stigma 2-crested. Filaments monadelphous below in a tube which is adherent to the corolla, diadelphous at the summit.—A climbing biennial, with thrice-pinnate leaves, cut-lobed delicate leaflets, and ample panicles of drooping white or purplish flowers. (Dedicated by Rafinesque to Major Adlum.)
1. A. cirrhòsa, Raf.—Wet woods; N. Eng. to Mich., E. Kan., and southward. June–Oct.—A handsome vine, with delicate foliage, climbing by the slender young leaf-stalks over high bushes; often cultivated.
2. DICÉNTRA, Borkh. Dutchman's Breeches.
Petals slightly cohering into a heart-shaped or 2-spurred corolla, either deciduous or withering-persistent. Stigma 2-crested and sometimes 2-horned. Filaments slightly united in two sets. Pod 10–20-seeded. Seeds crested.—Low, stemless perennials (as to our wild species) with ternately compound and dissected leaves, and racemose nodding flowers. Pedicels 2-bracted. (Name from δίς, twice, and κέντρον, a spur;—accidentally printed Diclýtra in the first instance, which by an erroneous conjecture was afterwards changed into Diélytra.)